Java Spit "." cannot work

Question

I try to split "." but it can not work, I get strings.length equals 0 .What's wrong with it?

String string = "11.12.1";
String[] strings = string.split(".");

Given that there is a typo in your code, are you sure this is the exact code you are running? — Arc676, Jun 12 '16 at 12:50
use \\. for split like this : String[] strings = string.split("\\."); — CrazyJavaLearner, Jun 12 '16 at 12:57

score 3 · Accepted Answer · answered Jun 12 '16 at 12:51

3

As string split takes an regex as argument, . is a wildcard for any character. Just escape it using a backslash (which you have to also escape for java with another one). Additionally, as Youcef Laidani pointed out, you have to call split on the string you just created, not something else:

string.split("\\.");

answered Jun 12 '16 at 12:51

Leon

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You are welcome. That `split` split always uses a regex is the only thing to keep in mind when using it, as it can have surprising effects if you don't. If you use the limit parameter, also remember, that you limit who many strings will be returned, not how many times the string will be split. Meaning if you set it to 1, the string will not be split at all. For more info you can also look at the [documentation](http://docs.oracle.com/javase/8/docs/api/java/lang/String.html#split-java.lang.String-). – Leon Jun 12 '16 at 13:03

Java Spit "." cannot work

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